Session Cookie: Also known as the transient cookie, a cookie which was erased when the user closes the web browser. It was just a temporary memory which cannot be retained after the browser is closed.
How to disable it?

Click the Chrome menu on the browser tool bar.
Select Settings.
Click Show advanced settings.
In the "Privacy" section, click the Content settings button.
In the "Cookies" section, you can change to your preferred setting.